EP2533411A1 - Circuit de limitation de tension pour dispositifs de commutation de puissance montés en série - Google Patents

Circuit de limitation de tension pour dispositifs de commutation de puissance montés en série Download PDF

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Publication number
EP2533411A1
EP2533411A1 EP10845099A EP10845099A EP2533411A1 EP 2533411 A1 EP2533411 A1 EP 2533411A1 EP 10845099 A EP10845099 A EP 10845099A EP 10845099 A EP10845099 A EP 10845099A EP 2533411 A1 EP2533411 A1 EP 2533411A1
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Prior art keywords
energy
voltage
circuit
power switching
series
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Application number
EP10845099A
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German (de)
English (en)
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EP2533411A4 (fr
EP2533411B1 (fr
Inventor
Jiashuan Fan
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Shenzhen Clou Drive Technology Co Ltd
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Shenzhen Clou Inverter Co Ltd
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Publication of EP2533411A4 publication Critical patent/EP2533411A4/fr
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
    • H03K17/08148—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in composite switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/10—Modifications for increasing the maximum permissible switched voltage
    • H03K17/107—Modifications for increasing the maximum permissible switched voltage in composite switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT

Definitions

  • the invention relates to a voltage-limiting circuit, and more particularly to a voltage-limiting circuit with energy recovery function for automatically limiting the amplitude of voltage at two ends of each power switching device in series connection.
  • the electricity grid provides electric energy generally in the form of industrial-frequency (50 Hz or 60 Hz) AC energy for users, however, the electric energy practically used by users is different, such as in the form of DC (for example, electrolytic aluminum), high-frequency AC (for example, induction heating), and frequency voltage adjusted as required (for example, variable frequency driver for a motor).
  • DC for example, electrolytic aluminum
  • high-frequency AC for example, induction heating
  • frequency voltage adjusted as required for example, variable frequency driver for a motor.
  • a power switching device is a core component of the converter widely-used for realizing the conversion of electrical energy.
  • the insulated gate bipolar transistor IGBT provided in batches at present has the withstand voltage limit value of 1700 V or 3300 V, and the high voltage such as 10 KV and 500 KV cannot be directly processed with a single power switching device. Furthermore, a low-voltage power switching device has lower cost, therefore, the low-voltage power switching devices are usually connected in series during the practical application to solve the problem of poor voltage resistance.
  • the parameters of a power switching device and a control circuit thereof have discreteness including temperature sensitivity and time variance, and the length of time in the switching-on process and switching-off process of the power switching device may be inconsistent.
  • the power switching device with longer switching-on process and shorter switching-off process has to bear higher voltage, and the device with little leakage current has to bear higher voltage when being cut off.
  • the higher voltage is detrimental to the work of the power switching device, and even the power switching device will suffer from breakdown damage when the voltage exceeds the withstand voltage limit value of the power switching device. Therefore, when the power switching devices are connected in series, special measures are required to be taken, and the voltage at two ends of the power switching device is limited in the safe range, for example, within the range of 70% of its withstand voltage limit value.
  • a dynamic and static voltage-sharing absorption unit circuit is connected on each power switching device in parallel.
  • the dynamic and static voltage-sharing absorption unit circuit includes a diode, a capacitor, and a parallel voltage-stabilizing circuit, and can fulfill the voltage limiting function.
  • the Chinese invention patent describes a "series power switch arm with automatic voltage-sharing function" (Application number: 01108712.9 ), and discloses a circuit for limiting the voltage at two ends of a power switching device, and its circuit form is shown in FIG. 1 .
  • the prior technical method has the disadvantages that first, one power switching device corresponds to one parallel voltage-stabilizing circuit, more parallel voltage-stabilizing circuits are used, the number of elements is large, and the utilization ratio is low; second, each parallel voltage-stabilizing circuit is required to be debugged independently, and when the stabilized-voltage value is changed, all the parallel voltage-stabilizing circuits are required to be changed, thus the workload is heavy; third, the parallel voltage-stabilizing circuit adopts energy-consuming type design and needs to consume electric energy, thus the efficiency of the complete machine using the technology is reduced.
  • the technical problems required to be solved in the invention are as follows: overcoming the defects of large number of the used parallel voltage-stabilizing circuits, large number of elements and low utilization ratio in the prior art, and solving the technical problem of heavy workload because each parallel voltage-stabilizing circuit is required to be debugged independently, and when the stabilized-voltage value is changed, all the parallel voltage-stabilizing circuits are required to be changed.
  • the invention also overcomes the technical problems in the prior art that the parallel voltage-stabilizing circuit adopts an energy-consuming type design and needs to consume electric energy, thus the efficiency of the complete machine using the technology is reduced.
  • the invention provides a voltage-limiting circuit for power switching devices connected in series.
  • the voltage-limiting circuit for the power switching devices connected in series comprises a series branch circuit comprising a plurality of power switching devices Q1-Qn, wherein each power switching device comprises a control terminal, a high-end SD, and a low-end WD, and in the series branch circuit, the series connection of the power switching devices Q1-Qn is that the high-end SD of a power switching device is connected with the low-end WD of another power switching device in series.
  • the voltage-limiting circuit for the power switching devices connected in series further comprises a plurality of energy temporary-storage circuits K1-Kn, wherein each power switching device is connected in parallel with one energy temporary-storage circuit.
  • the energy temporary-storage circuits K1-Kn comprise clamping diodes D1-Dn, energy storage capacitors C1-Cn, static voltage-sharing resistors R1-Rn, and energy return ends CF1-CFn.
  • the energy storage capacitors are connected in parallel with the static voltage-sharing resistors to form the energy return ends, and then connected in series with the clamping diodes.
  • the voltage-limiting circuit for the power switching devices connected in series further comprises a centralized voltage-limiting circuit H for limiting voltage for the series branch circuit, the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD2-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD2-JDn are in series connected in sequence.
  • the anodes of the energy concentration diodes JD2-JDn are connected with the energy return ends CF2-CFn, respectively, and the cathode of the energy concentration diode JD2 is connected with the energy return end CF1.
  • the energy temporary-storage circuit After the energy storage capacitor is connected with the static voltage-sharing resistor in parallel, one end of the energy storage capacitor is connected with the cathode of the clamping diode to form an energy return end, the other end of the energy storage capacitor is connected to the low-end WD of the power switching device connected with the energy temporary-storage circuit in parallel, and the anode of the clamping diode is connected to the high-end SD of the power switching device connected with the energy temporary-storage circuit in parallel.
  • the energy temporary-storage circuit After the energy storage capacitor is connected with the static voltage-sharing resistor in parallel, one end of the energy storage capacitor is connected with the anode of the clamping diode to form an energy return end, the other end of the energy storage capacitor is connected to the high-end SD of the power switching device connected with the energy temporary-storage circuit in parallel, and the cathode of the clamping diode is connected to the low-end WD of the power switching device connected with the energy temporary-storage circuit in parallel.
  • the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD2-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD2-JDn are in series connected in sequence.
  • the anodes of the energy concentration diodes JD2-JDn are connected with the corresponding energy return ends CF2-CFn, respectively, and the cathode of the energy concentration diode JD2 is connected with the first energy return end CF1.
  • the centralized voltage-limiting circuit H further comprises an energy concentration diode JD1, the high voltage end U+ of the voltage-limiting functional circuit U is connected with the cathode of the energy concentration diode JD1, the low voltage end U- of the voltage-limiting functional circuit U is connected with the high-end SD of the first power switching device Q1, and the anode of the energy concentration diode JD1 is connected with the energy return end CF1 of the first energy temporary-storage circuit K1.
  • the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD2-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD2-JDn are in series connected in sequence.
  • the anodes of the energy concentration diodes JD2-JDn are connected with the corresponding energy return ends CF2-CFn, respectively, and the cathode of the energy concentration diode JD2 is connected with the first energy return end CF1.
  • the centralized voltage-limiting circuit H further comprises an energy concentration diode JD1, the low voltage end U- of the voltage-limiting functional circuit U is connected with the anode of the energy concentration diode JD1, the high voltage end U+ of the voltage-limiting functional circuit U is connected with the low-end WD of the last power switching device Qn, and the cathode of the energy concentration diode JD1 is connected with the energy return end CFn of the last energy temporary-storage circuit Kn.
  • Two ends of the energy concentration diodes except the energy concentration diode JD1 are connected with two adjacent energy return ends CF or connected at an interval of one or more energy return ends CF.
  • the voltage-limiting functional circuit U returns the inflow energy to a power supply or provides the inflow energy for a load converter.
  • the voltage-limiting circuit for the power switching devices connected in series further comprises surge absorption circuits or surge absorption elements LY1-LYn for absorbing the surge voltage of the power switching device.
  • the surge absorption circuits or surge absorption elements LY1-LYn are connected with the corresponding power switching devices Q1-Qn in parallel.
  • the energy concentration diode JD is formed by connecting a diode and an inductor in series.
  • a centralized voltage-limiting circuit is used for finishing the regulation of the voltage limit value at one time; meanwhile, a plurality of energy temporary-storage circuits matched with the power switching devices are adopted, and return the inflow energy of the voltage-limiting circuit to a power supply or provide the inflow energy for a load for effective utilization, thus the overall efficiency is improved.
  • FIG. 1 is a circuit diagram of a series power switch arm in the prior art
  • FIG. 2 is a circuit diagram of a voltage-limiting circuit for power switching devices connected in series in accordance with one embodiment of the invention
  • FIG. 3 is another circuit diagram of a voltage-limiting circuit for power switching devices connected in series in accordance with one embodiment of the invention.
  • FIG. 4 is an equivalent circuit diagram of a power switching device in stable conduction in accordance with one embodiment of the invention.
  • a voltage-limiting circuit for power switching devices connected in series comprises a series branch circuit comprising a plurality of power switching devices Q1-Qn.
  • Each power switching device comprises a control terminal, a high-end SD, and a low-end WD.
  • the series connection of the power switching devices Q1-Qn is that the high-end SD of a power switching device is in series connected with the low-end WD of another power switching device in sequence, that is, the low-end of the power switching device Q1 is connected with the high-end of the power switching device Q2, the low-end of the power switching device Q2 is connected with the high-end of the power switching device Q3, and so forth, and the low-end of the power switching device Qn-1 is connected with the high-end of the power switching device Qn.
  • the voltage-limiting circuit for the power switching devices connected in series further comprises a plurality of energy temporary-storage circuits K1-Kn.
  • the energy temporary-storage circuit used for storing the fast flow energy of load current during the nonsynchronous switching on-off process of the power switching devices is correspondingly connected at two ends of each power switching device in parallel, and correspondingly, the energy temporary-storage circuits K1, K2...Kn are correspondingly connected at two ends of the power switching devices Q1, Q2...Qn in parallel.
  • the energy temporary-storage circuits K are in series connected in sequence, that is, the energy temporary-storage circuit K1 is connected with the energy temporary-storage circuit K2 in series, the energy temporary-storage circuit K2 is connected with the energy temporary-storage circuit K3 in series, and so forth, and the energy temporary-storage circuit Kn-1 is connected with the energy temporary-storage circuit Kn in series.
  • the energy temporary-storage circuits K1-Kn comprise clamping diodes D1-Dn, energy storage capacitors C1-Cn, static voltage-sharing resistors R1-Rn, and energy return ends CF1-CFn.
  • the energy storage capacitors are connected with the static voltage-sharing resistors in parallel to form the energy return ends, then the energy return ends are connected with the clamping diodes in series, and the energy temporary-storage circuit is connected with the power switching device in parallel.
  • a centralized voltage-limiting circuit H for limiting voltage for the series branch circuit is also included in the voltage-limiting circuit.
  • the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD1-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD1-JDn are in series connected in sequence, and the energy concentration diodes JD1-JDn are connected with the energy return ends CF1-CFn, respectively.
  • the voltage-limiting circuit for the power switching devices connected in series adopts the energy temporary-storage circuits matched with the power switching devices, correspondingly, the energy temporary-storage circuits K1, K2...Kn are correspondingly connected at two ends of the power switching devices Q1, Q2...Qn in parallel.
  • the energy of load current during the nonsynchronous switching on-off process of the power switching devices Q1, Q2...Qn is temporarily stored through the energy temporary-storage circuits K1, K2...Kn, and the temporarily stored energy is transmitted to the voltage-limiting functional circuit U step by step for processing during the stable conduction of the power switching devices Q1, Q2...Qn.
  • Only one centralized voltage-limiting circuit H is used in the voltage-limiting circuit for the power switching devices connected in series, fewer elements are used, and the regulation of the voltage limit value can be finished at one time, thus the operation is convenient.
  • the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD2-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD2-JDn are in series connected in sequence, the anodes of the energy concentration diodes JD2-JDn are connected with the corresponding energy return ends CF2-CFn, respectively, and the cathode of the energy concentration diode JD2 is connected with the energy return end CF1.
  • the centralized voltage-limiting circuit H further comprises an energy concentration diode JD1.
  • the high voltage end U+ of the voltage-limiting functional circuit U is connected with the cathode of the energy concentration diode JD1
  • the low voltage end U- of the voltage-limiting functional circuit U is connected with the high-end SD of the first power switching device
  • the anode of the energy concentration diode JD1 is connected with the energy return end CF1 of the first energy temporary-storage circuit K1.
  • the energy temporary-storage circuit is correspondingly connected at two ends of each power switching device in parallel. All the energy temporary-storage circuits are consistent in form; the ith energy temporary-storage circuit Ki comprises a clamping diode Di, an energy storage capacitor Ci, and a static voltage-sharing resistor Ri. After the energy storage capacitor Ci is connected with the static voltage-sharing resistor Ri in parallel, one end of the energy storage capacitor Ci is connected with the cathode of the clamping diode Di to form an energy return end CFi, the other end of the energy storage capacitor Ci is connected to the low-end of the power switching device Qi, and the anode of the clamping diode Di is connected with the high-end of the power switching device Qi.
  • the anode of the ith energy concentration diode JDi is connected with the energy return end CFi of the ith energy temporary-storage circuit
  • the cathode of the ith energy concentration diode JDi is connected with the energy return end CFi-1 of the (i-1)th energy temporary-storage circuit, and so forth.
  • the voltage-limiting functional circuit U is connected at two ends of the energy storage capacitor C in parallel, is a shunt voltage regulator, keeps the voltage at two ends basically unchanged when electric energy flows in, and is not provided with an energy concentration diode JD1.
  • an energy concentration diode JD1 is provided.
  • the high voltage end U+ of the voltage-limiting functional circuit U is connected with the cathode of the energy concentration diode JD1
  • the low voltage end U- of the voltage-limiting functional circuit U is connected with a head end SD of the series branch circuit
  • the anode of the energy concentration diode JD1 is connected with the energy return end CF1 of the first energy temporary-storage circuit.
  • the energy temporary-storage circuits K1-Kn comprise clamping diodes D1-Dn, energy storage capacitors C1-Cn, static voltage-sharing resistors R1-Rn, and energy return ends CF1-CFn.
  • the energy temporary-storage circuit after the energy storage capacitors are connected with the static voltage-sharing resistors in parallel to form the energy return ends, then the energy return ends are connected with the clamping diodes in series, and the energy temporary-storage circuit is connected with the power switching device in parallel.
  • the centralized voltage-limiting circuit H comprises a voltage-limiting functional circuit U and a plurality of energy concentration diodes JD2-JDn for concentrating the energy temporarily stored by the corresponding energy temporary-storage circuits K.
  • the anodes and cathodes of the energy concentration diodes JD2-JDn are in series connected in sequence, and the anodes of the energy concentration diodes JD2-JDn are connected with the corresponding energy return ends CF2-CFn, respectively;
  • the centralized voltage-limiting circuit H further comprises an energy concentration diode JD1.
  • the low voltage end U- of the voltage-limiting functional circuit U is connected with the anode of the energy concentration diode JD1
  • the high voltage end U+ of the voltage-limiting functional circuit U is connected with the low-end WD of the last power switching device
  • the cathode of the energy concentration diode JD1 is connected with the energy return end CFn of the last energy temporary-storage circuit Kn.
  • the energy temporary-storage circuit is correspondingly connected at two ends of each power switching device in parallel, all the energy temporary-storage circuits are consistent in form, and the ith energy temporary-storage circuit Ki comprises a clamping diode Di, an energy storage capacitor Ci and a static voltage-sharing resistor Ri.
  • the energy storage capacitor Ci is connected with the static voltage-sharing resistor Ri in parallel, one end of the energy storage capacitor Ci is connected with the anode of the clamping diode Di to form an energy return end CFi, the other end of the energy storage capacitor Ci is connected to the high-end of the power switching device Qi, and the cathode of the clamping diode Di is connected with the low-end of the power switching device Qi.
  • the anode of the ith energy concentration diode JDi is connected with the energy return end CFi of the ith energy temporary-storage circuit
  • the cathode of the ith energy concentration diode JDi is connected with the energy return end CFi-1 of the (i-1)th energy temporary-storage circuit, and so forth.
  • the voltage-limiting functional circuit U is connected at two ends of the energy storage capacitor Cn in parallel, is a shunt voltage regulator, keeps the voltage at two ends basically unchanged when electric energy flows in, and is not provided with an energy concentration diode JD1.
  • an energy concentration diode JD1 is provided.
  • the high voltage end U+ of the voltage-limiting functional circuit U is connected with a tail end WD of the series branch circuit, the low voltage end U- of the voltage-limiting functional circuit U is connected with the anode of the energy concentration diode JD1, and the cathode of the energy concentration diode JD1 is connected with the energy return end CFn of the last energy temporary-storage circuit.
  • a slowly switched-on power switching device Qi is also changed into an on-state after a short time delay of 1 microsecond after other power switching devices have been conducted.
  • the load current accumulates charge in the energy storage capacitor Ci through the energy temporary-storage circuit connected at two ends of the slowly switched-on power switching device Qi in parallel, thereby leading to slight voltage rise.
  • the delay time is 1 microsecond
  • the energy storage capacitor Ci is 10 ⁇ F
  • a rapidly switched-off power switching device Qx is switched off in advance before the switch-off of other power switching devices, and then other power switching devices are also changed into an off-state after a short time delay of 1 microsecond.
  • the load current accumulates charge in the energy storage capacitor Cx in the way that the energy temporary-storage circuit is connected at two ends of the rapidly switched-off power switching device Qx in parallel to form a closed circuit, thereby leading to slight voltage rise.
  • the load current is 100 amps
  • the delay time is 1 microsecond
  • the energy storage capacitor Cx is 10 ⁇ F
  • the voltage rises by 10 V i.e., 100 amps*1 microsecond/10 ⁇ F.
  • a plurality of energy storage capacitors may rise in voltage, in the two energy storage capacitors with highest voltage rise, one energy storage capacitor Corresponds to the switching-on process, the other energy storage capacitor Corresponds to the switching-off process, the worst situation is that the same energy storage capacitor is in the maximum rise in the two processes, and in the above example, the maximum voltage rise is 20 V.
  • the head end SD (i.e., the high-end of the power switching device Q1) or tail end WD (i.e., the low-end of the power switching device Qn) of the series branch circuit is used as the reference point of the centralized voltage-limiting functional circuit U1, and at the moment, the conditions are created for a plurality of series branch circuits to share one voltage-limiting functional circuit U.
  • the head end SD of the series branch circuit is connected in parallel, and the tail end WD is also connected in parallel; in a voltage booster circuit and a push-pull circuit, the tail end WD of the series branch circuit is usually connected in parallel.
  • a surge absorber is connected at two ends of each power switching device in parallel, the serial number is from LY1 to LYn, the further protection is provided for the voltage-limiting circuit during the failure, and the clamping voltage of the surge absorber is higher than the stabilized voltage of the voltage-limiting circuit, but lower than the withstand voltage of the power switching device.
  • the energy concentration diode JD is formed by connecting a diode and an inductor in series, and the conducting direction is not changed.
  • the energy concentration diode is connected with an inductor in series, so as to limit the energy temporarily stored in the energy storage capacitor Ci, and when the series branch circuit is in the stable conduction state, the energy flows towards the current peak of the centralized voltage-limiting functional circuit U1 step by step through the energy concentration diode.
  • two ends of other energy concentration diodes except for the energy concentration diode JD1 are connected with two adjacent energy return ends CF or connected at an interval of one or more energy return ends CF in accordance with specific conditions, and its requirement is that any energy return end CFi has a closed circuit for allowing the energy to quickly flow to the centralized voltage-limiting functional circuit U 1 when the series branch circuit is in the stable conduction state.
  • the voltage-limiting functional circuit U also can return the inflow energy to a power supply or provides the inflow energy for a load converter.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Inverter Devices (AREA)
  • Electronic Switches (AREA)
  • Power Conversion In General (AREA)
EP10845099.0A 2010-02-05 2010-10-28 Circuit de limitation de tension pour dispositifs de commutation de puissance montés en série Not-in-force EP2533411B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010101100437A CN101984546B (zh) 2010-02-05 2010-02-05 功率开关器件串联限压电路
PCT/CN2010/078206 WO2011095016A1 (fr) 2010-02-05 2010-10-28 Circuit de limitation de tension pour dispositifs de commutation de puissance montés en série

Publications (3)

Publication Number Publication Date
EP2533411A1 true EP2533411A1 (fr) 2012-12-12
EP2533411A4 EP2533411A4 (fr) 2014-09-03
EP2533411B1 EP2533411B1 (fr) 2016-12-07

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EP10845099.0A Not-in-force EP2533411B1 (fr) 2010-02-05 2010-10-28 Circuit de limitation de tension pour dispositifs de commutation de puissance montés en série

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US (1) US8610483B2 (fr)
EP (1) EP2533411B1 (fr)
JP (1) JP5554421B2 (fr)
CN (1) CN101984546B (fr)
WO (1) WO2011095016A1 (fr)

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EP3945669A1 (fr) * 2020-07-27 2022-02-02 TRUMPF Huettinger Sp. Z o. o. Unité de commutation haute tension, ensemble d'impulsion et procédé permettant d'éviter les déséquilibres de tension dans un commutateur haute tension

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CN103326550A (zh) * 2013-06-28 2013-09-25 王达开 一种自动限压的功率开关器件串联电路
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CN103490603B (zh) * 2013-09-16 2015-12-16 王达开 一种功率开关器件串联限压电路
CN104049146B (zh) * 2014-06-30 2017-01-04 北京四方继保自动化股份有限公司 一种确定链式多电平变流器功率模块静态均压电阻阻值的方法
EP3029833B1 (fr) * 2014-12-03 2019-03-13 General Electric Technology GmbH Dispositif de commutation à semi-conducteur
DE102017203053A1 (de) * 2017-02-24 2018-08-30 Siemens Aktiengesellschaft Vorrichtung zur Spannungsbegrenzung für ein Gleichspannungsnetz
CN108667441B (zh) * 2017-03-31 2022-07-26 通用电气公司 功率半导体器件及其缓冲电路
US11264804B2 (en) 2019-02-14 2022-03-01 Sungrow Power Supply Co., Ltd. Circuit for component voltage limitation, and apparatus for applying the same
CN111565021A (zh) * 2019-02-14 2020-08-21 阳光电源股份有限公司 一种组件限压电路及其应用装置
CN113193864A (zh) * 2021-04-29 2021-07-30 武汉科华动力科技有限公司 一种双钳位的功率管驱动电路及其驱动方法
CN114552619B (zh) * 2022-01-18 2024-05-24 华中科技大学 一种串联二极管器件并联均压电路及参数设计方法

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CN101984546B (zh) 2013-03-06
US8610483B2 (en) 2013-12-17
EP2533411A4 (fr) 2014-09-03
CN101984546A (zh) 2011-03-09
JP2013518544A (ja) 2013-05-20
WO2011095016A1 (fr) 2011-08-11
US20120242391A1 (en) 2012-09-27
JP5554421B2 (ja) 2014-07-23
EP2533411B1 (fr) 2016-12-07

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